Querquedula, a kind of Duck mentioned by Varro and Columella ; perhaps from = a light vessel used by the Cyprians, or from Kipicaipta=I ring. Professor Skeat says the name is from an onomatopoeic base, querq or kark, significative of any loud noise. According to O. Muller's conjecture, from the Greek Kipkovpos. Hence the French gercelle.
Differs considerably from Nettium in structure, plumage, and habits. A soft membrane fringes the end of the upper mandible, and the upper wing-coverts are blue or bluish grey. Northern Hemisphere and Neotropical region.